Conduit cap



W. VIBBER CONDUIT CAP Filed April 10, 1924 Dec. Z8 1926.

Patented Dec. 28, 1926.

UNITED STATES 1,612,332 PATENTy OFFICE.

WHEELER H. VIBBER, OF NEW LONDON, CONNECTICUT, ASSIGNOR OF ONE-HALF TO THE GILLENE-VIBBER CO., 0F NEW LONDON, CONNECTICUT, A CORPORATION.

CONDUIT CAP.

Fig. 1 is a view in side elevation showing my improved conduit-cap as: applied to a junction-box, both being aligned upon a flat surface shown by broken lines.

Fig. 2 is a view of the. cap and box in vertical central section, as ap lied to a clapboarded surface shown byV lroken lines.

Fig. 3; is a plan view thereof, with the hood and clamping-members removed.

Fig.y 4 is a detached plan view of the onepiece bottom-plate and upstanding mounting-arm forming the bracket-member of my improved conduit-cap.

Fig. 5 is a 'broken view, in side elevation, showing a flat-topped junction-box, with the bracket-member of my improved conduitcap mounted upon it.

Fig. 6 is a broken view in vertical central section of the bracket-member of my imp roved cap as applied directly to a conduitipe.

p My invention relates to an improved conduit-cap, the object being to articulate its connection with aconduit-pipe or a junction-box mounted thereupon, so as to provide for variations in their line-up to conform to irregular surfaces, such, for instance, as theclapboarded or shingled side of a house.

Vith these ends in view, my invention consists in a conduit-cap characterized by its adaptation for articulated connection with a conduit-pipe or junction-box mounted thereupon, so that they may be installed out of line, as wellA as in line.

My invention further consists in a conduit-cap having certain details of construction and combinations of parts as will be hereinafter described and particularly pointed out in the claims.

In carrying out my invention, as shown in Figs. 1 to 4 inclusive, I employ a conduitcap comprising a hood 10,.a bracket-member consisting of a substantially horizontal bottom-plate 11 and a substantially vertical mounting-arm 12 made in one piece therewith, and two insulating gripping-members 13 and 14.- having two gripping-faces and interposed between the spaced outer ends of the said hood and bottom-plate and secured in place by clamping-screws 15 passing through them and through the outer edge of the hood and the outer edge oi' the plate. The mounting arm 12 is provided with holes 16 for the reception of a lag-screw or screws 17 by means of which it is secured to the surface to which the fixture is applied. Toward its inner end the bottom-plate 11 is shape-d to form a transverse arch 18, the lower face of which substantially corresponds in curvature to the rounded top 19 of a junction-box 20, which may be of any approved construction. As shown, its rounded top is provided with a threaded bore 21, while its lower end or side is provided with a threaded bore 22 for the reception of a conduit-pipe 23. The bottom-plate of the cap is formed with an elongated clearance-opening 24 intersecting the arch 18 and, as shown, extending transversely across it. An externally-threaded thimble 25, having a polygonal head 26 to adapt it to be screwed home and removed by is passed down through into the threaded bore 21 and when screwed home binds the conduitcap thereto. Prior to this, the conduit-cap and junction-box may be rocked with respect to each other, as may be required, owing to the elongated character of the opening 24.-, which must be enough larger than the thimble to permit sufficient rocking movement between the cap and box to meet the requirements' of practice.

Under the construction described, the cap and box may be arranged inline, as shown in Fig. 1, or out of line, as shown in Fig. 2, in which the mounting-arm 12 is canted with respect to the back of the commodate the clapboards 27.

In the modiiied .construction shown by Fig. 5, the unction-box 28 is provided with the said opening 24 of the junction-box a `flat, instead of a curved, top, as is the junction-box 20.

In the modified construction shown by Fig. 6, my improved cap is shown as directly connected to the conduit-pipe 23 by means of the thimble 25, which is passed downward through the clearance-opening 24 of the bottom-plate 11 into the upper end of va con-A duit-couplingl 29 screwed upon the upper end oi the conduit 23 and virtually forming a part thereof. Under this con-struction, the arch 18 of the bottom-plate 11 engages with the projecting upper end of the coupling 29 on which it is rocked as required, prior to the turning home of the thimble 25.

I claim:

1. In a conduit-cap, the combination with a bracket having a mounting-arm by means junction-box toac-v an ordinary wrench, i

of which it is installed, and a substantiallyhorizontal bottom-plate formed with an upwardly-set arch interseeted by an opening, of a thimble smaller in diameter than the said opening in which it iS located tor the articulated connection of the Conduit-cap with a eoniplenientary iixture, such as a oonduit-pipe; ot a hood covering the said plate, conductor-Clamping means located within the hood and interposed between the same and the plate, and means for securing the said conduetor-elamping means to the said hood and plate.

2. In a conduit-cap, the combination with a bracket having a mounting-arm by means ot' which it is installed, and a substantiallyhorizontal bottom-platev formed with an arch intersected by an elongated clearanceopening; ot' a junction-box, the upper end of which has a threaded bore, a thiinble passing downward through the said clearanceopening which is larger than the said thimble into the bore of the box, whereby the oonduit--eap and box may be relatively adjusted,

a hood superimposed upon the said plate, Conductor-Clamping means located within the hood and interposed between the Same and the plate, and means tor securing the said eonductor-clamping means to the said hood and plate.

53. A Conduit-cap having a bottom-plate, the inner portion ot which is arched and interseeted by a clearance-opening, a mountingarm made integral with the inner end ot' the said plate, a hood, and clamping-ineinbers interposed between the hood and plate; in Combination with a mounting-box having its top rounded and tormed with a threaded bore, and an eXternally-threaded thimble provided at its upper end with a flange, the said thiinble being passed downward through the clearance-opening ol' the bottom-plate of the cap into the threaded bore in the top of the boi;`I whereby the Cap and box may be installed in or out et line.

In testimony whereof, I have signed this specieation.

WHEELER H. VBBER. 

